223111100212 has 96 divisors (see below), whose sum is σ = 525314119680. Its totient is φ = 80074293120.

The previous prime is 223111100203. The next prime is 223111100227. The reversal of 223111100212 is 212001111322.

It is a super-3 number, since 3×223111100212³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1892739 + ... + 2007157.

It is an arithmetic number, because the mean of its divisors is an integer number (5472022080).

Almost surely, 2^223111100212 is an apocalyptic number.

223111100212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223111100212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262657059840).

223111100212 is an abundant number, since it is smaller than the sum of its proper divisors (302203019468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223111100212 is a wasteful number, since it uses less digits than its factorization.

223111100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114941 (or 114939 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 223111100212 its reverse (212001111322), we get a palindrome (435112211534).

It can be divided in two parts, 223111 and 100212, that added together give a palindrome (323323).

The spelling of 223111100212 in words is "two hundred twenty-three billion, one hundred eleven million, one hundred thousand, two hundred twelve".